Biltbest Sliding Rolling Patio Door Wood / Clad Tandem Roller

Patio Door Replacement Roller Assembly is for the Biltbest OEM Sliding Glass Patio Door. Features an adjustable steel housing with two ball bearing wheels. Choose either a nylon or a steel wheel. The typical patio sliding glass door uses two (2) roller assemblies, one on each bottom corner of the sliding door. We recommend replacing both sliding door rollers at the same time to prevent extra wear-and-tear to one new roller - That's Why We Sell These PER PAIR.